Vat dye.



UNITED STATES PATENT OFFICE JOSEPH DEINEL OEELBERFELD, GERMANY, ASSIGNOR T0 FARBENFABRIKEN VOBM.

FRIEDR. BAYER 8c 80., OF ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

VAT DYE.

Specification of Letters Patent.

No Drawing. Application filed May 12, 1909, Serial No. 495,450. Renewed March 18, 1910.- Serial No. 550,296.

" and pulverized colored owders practically insoluble in water; solu 1e in concentrated sulfuric acid with from a yellow to red to violet to brown color. They yield on treatment with hydrosulfite and caustic soda lye from orange to red to brown vats suitable with 100 for dyeing and (printin the textile fiber from yellow to re to vie et to brown shades. They also form valuable lakes.

In order to illustrate the new process I can proceed as follows, the parts being by wei' t:--10 parts of l-aminoanthraquinone are eated to boiling for about half an hour arts of mtrobenzene and 20 parts of benzoy chlorid. The new condensation roduct crystallizes from the cooling liquid in the shape of yellow needles which are filtered off and dried. It is soluble in pyridin with a yellow color, in concentrated sulfuric acid with an orange color. By treatment with hydrosulfite and NaOH a darkred vat is obtained which dyes cotton wool or silk pure yellow shades.

Other aminoanthraquinones may be used. Products of similar qualities are thus obtained, e. g. monobenzoyl-Q-aminoanthra- Huinone (dyes yellow), monobenzoyl-lA- iaminoanthraqmnone (dyes violet), monobenzoyl-l-amino-5-chloroanthraquinone (dyes yellow), monobenzoyl-l-amino-6-chloroanthraquinone (dyes ye low), monobenzoylated l-aminoi-oxyanthraxiumone (dyes bright blue-red), monobenzo ated lamino-4.5.8- trioxyanthraquinone yes red-violet),monobenzo l- 1 amino4-methoxyanthraquinone (dyes right ponceau-red), l-rnonobenzoylamino-2-methylanthraquinone (dyes yellow), 1-monobenzoylamino-5-aminoanthraquinone (dyes red), l-monobenzoylaminotmethylaminoanthraquinone (dyes blue), 1- monobenzo lamino 5 methylaminoanthraquinone yes bordeaux), l-monobenzoylamino-5-dimethylaminoanthraquinone (dyes red, l-monobenzoylamino-5-para-toluidorant raquinone (dyes brown), .1-monobenzoylamlno-4-chloroanthraquinone (dyes ellow), l-monobenzo lamino-2-methyl-4-c loroanthraquinone yes yellow), l-monobenzoylamino-4-nitroanthraquinone (dyes violet), l-monobenzoylamino-5-nitroanthraquinone (dyes orange-red), monobenzo lated 1-amino-5-oxy-ant raqumone (dyes ye low), monobenzoylatedJ-amino-Q-bromo-4 0xyanthraquinone (dyes yellow), monobenzoylated-1-amino-3-bromo 4 oxyanthraquinone (dyes bluish-red), 1-monobenzoylamino-4- phenoxyanthraquinone (dyes yellow).

I cla1m:

1. The herein described new vat dyestufi's I of the anthracene series which can be obtained from benzoyl chlorid and an aminoanthraquinone, which dyestuffs are, after being dried and pulverized, colored powders practically insoluble in water, soluble in concentrated sulfuric acid with a yellow to red to violet to brown color; 'ving from orange to red to brown vats wit hydrosulfite and caustic soda lye, which vats dye the textile fiber from yellow to red to violet to brown shades, substantially as described.

2. The herein described new vat dyestufli' of the anthracene series which is the l-benzoylaminoanthra uinone, which dyestufi' is, after bein 'drie and ulverized, a yellow powder w ich is solub e in pyridin with a yellow color; .soluble in concentrated sulfuric acid with an orange color; 'ving a dark-red vat with hydrosulfite an caustic soda 1 e, which vat dyes the textile fiber beauti 1 yellow shades, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOSEPH DEINET. [a 8.]

Witnesses:

O'rro Komo,

C. J. Wmon'r. 

